From 76e2db61ee15a78c0be95a563ef74c9e2493fa84 Mon Sep 17 00:00:00 2001
From: Daniel Scally <dan.scally@ideasonboard.com>
Date: Thu, 2 May 2024 14:30:39 +0100
Subject: ipa: libipa: Allow creation of empty Histogram

For convenience's sake allow the creation of empty Histograms so
they can be embedded within other Classes and filled out with
data at some later point in time.

Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
---
 src/ipa/libipa/histogram.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/ipa/libipa/histogram.h')

diff --git a/src/ipa/libipa/histogram.h b/src/ipa/libipa/histogram.h
index 05bb4b80..54bb2a19 100644
--- a/src/ipa/libipa/histogram.h
+++ b/src/ipa/libipa/histogram.h
@@ -22,6 +22,7 @@ namespace ipa {
 class Histogram
 {
 public:
+	Histogram() { cumulative_.push_back(0); }
 	Histogram(Span<const uint32_t> data);
 	size_t bins() const { return cumulative_.size() - 1; }
 	uint64_t total() const { return cumulative_[cumulative_.size() - 1]; }
-- 
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